Build 2 custom racers or robots for a high-speed showdown in the streets! This awesome 4-in-1 STREET SHOWDOWN set has 273 pieces for you to build WHEELJACK and KNOCK OUT robots or vehicles. The 4 KREON figures, WHEELJACK, KNOCK OUT and 2 Driver figures, are standing by to jump in on the action! Build your AUTOBOT and DECEPTICON warriors as vehicles or robots, and let the battle begin! • Build WHEELJACK and KNOCK OUT robots or vehicles!• Also includes WHEELJACK, KNOCK OUT and 2 Driver KREON figures!• KREON figures come with weapons.• Set includes 1 piece of the DARK ENERGON weapon.• Other sets (sold separately) include other DARK ENERGON pieces.• Works with leading building brands!